Application: systemsettings5 (5.3.1)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-21-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed:

switching between categories on  the category tree: switching from Display settings to Composer

The crash can be reproduced every time.

-- Backtrace:
Application: Ustawienia systemowe (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fdeb465f780 (LWP 8516))]

Thread 3 (Thread 0x7fdeb13e8700 (LWP 8517)):
#0  0x00007fdec05558dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fdebe86fb72 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fdebe87164f in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fdeb41d5099 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#4  0x00007fdec0bd6b0e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fdebd7896aa in start_thread (arg=0x7fdeb13e8700) at pthread_create.c:333
#6  0x00007fdec0560eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fdea1278700 (LWP 8537)):
#0  0x00007fdec055149d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fdeb96c6f85 in  () at /usr/lib/nvidia-349/tls/libnvidia-tls.so.349.16
#2  0x00007fdebd2ae2f0 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fdea1277c10, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#3  0x00007fdebd2ae2f0 in g_wakeup_acknowledge (wakeup=0x7fdeac0015b0) at /build/buildd/glib2.0-2.44.1/./glib/gwakeup.c:210
#4  0x00007fdebd26a96c in g_main_context_check (context=context@entry=0x7fde9c0009b0, max_priority=2147483647, fds=fds@entry=0x7fde9c003070, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3600
#5  0x00007fdebd26ae60 in g_main_context_iterate (context=context@entry=0x7fde9c0009b0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3805
#6  0x00007fdebd26afcc in g_main_context_iteration (context=0x7fde9c0009b0, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#7  0x00007fdec0e6dc6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fdec0e123e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fdec0bd1b44 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fdebfb9cf65 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007fdec0bd6b0e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fdebd7896aa in start_thread (arg=0x7fdea1278700) at pthread_create.c:333
#13 0x00007fdec0560eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fdeb465f780 (LWP 8516)):
[KCrash Handler]
#6  0x00007fdebf65ed6b in QQuickItemPrivate::addToDirtyList() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fdebf65ee28 in QQuickItemPrivate::dirty(QQuickItemPrivate::DirtyType) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fdebf669045 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fdec0e4673a in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fdebf667b6b in QQuickItem::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007fdec1c00b2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007fdec1c06000 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007fdec0e14c2b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fdec0e16c9b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fdec0e6d843 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007fdebd26ac3d in g_main_context_dispatch (context=0x7fdeac001710) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3122
#17 0x00007fdebd26ac3d in g_main_context_dispatch (context=context@entry=0x7fdeac001710) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3737
#18 0x00007fdebd26af20 in g_main_context_iterate (context=context@entry=0x7fdeac001710, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3808
#19 0x00007fdebd26afcc in g_main_context_iteration (context=0x7fdeac001710, may_block=1) at /build/buildd/glib2.0-2.44.1/./glib/gmain.c:3869
#20 0x00007fdec0e6dc57 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fdec0e123e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fdec0e1a02c in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x000000000040ef6b in main ()

Reported using DrKonqi